Accessories are items that will require another item for it to completely work. A couple of examples will include earphones, or a keyboard. By themselves, they are pretty useless, but with appropriate devices, they can be invaluable. All of the accessories noted here will work with a component that is sold by KCI, and they will come in 2 versions – an A Series which is the minimal device requisites, and a P Series which will be maxed out.